Steve Kerr’s wife, Margot, woke him up on Saturday morning with some news he’d been anticipating. Donald Trump, America’s divisive, tweet-happy president, had zipped out another of his online blurbs — sent at 4:45 a.m. PT — officially uninviting Stephen Curry (and, indirectly, the Warriors) from the White House because of Curry’s “hesitating,” as he put it.

“There it is!” Kerr recalled saying. “He was going to break up with us before we broke up with him.”

The Warriors had planned a Saturday morning team meeting on the topic. General manager Bob Myers had promised the subject would be approached delicately and left open the possibility of his franchise accepting the traditional trip reserved for defending champs.

But this result was inevitable. These Warriors players, so outspoken and disgusted with Trump’s rhetoric, were never going to agree to go. Trump’s tweet just made it easier,...